1991 MITSUBISHI 3000GT sensor

15-20INTAKE AND EXHAUST - Turbocharger (Front)
19. INSTALLATION OF OXYGEN SENSORUse the special tool to install the oxygen sensor.
I;,iI-
i=x---b05F004E
l MatchmarkHose end paintPipe end protrusion05F002F
l MatchmarkHose end paintPipe end protrusion
Intercoolerright
J
Air Intake hose B
05FOO237. INSTALLATION OF AIR HOSE E
/ 5. AIR HOSE B
Aligning the marks at the points indicated by the arrows,
insert securely into the stepped portion of the pipe or until
seated.
CautionBe careful not to allow any foreign matter to get into
the hoses or pipes.
3. INSTALLATION OF AIR HOSE D
/ 1. AIR HOSE C
Aligning the marks at the points indicated by the arrows,
insert securely into the stepped portion of the pipe.
CautionBe careful not to allow any foreign matter to get into
the hoses or pipes.
LJ2. INSTALLATION OF AIR INTAKE HOSE B
Engaging the notches with
LL marks at the points indicated
by the arrows, insert until seated.
Insert the turbocharger end of air intake hose B completely.
[ TSB RevisionI

INTAKE AND EXHAUST - Turbocharger (Rear)15-21
TURBOCHARGER (REAR)
iREMOVAL AND INSTALLATION
/
id
Post-installation ODerationIl Installation of Front Exhaust Pipe(Referto P.15-31.)l Refilling of the Engine Coolant
(Refer to GROUP 00 - Maintenance
l Adjustment of Accelerator Cable1~~~~o~~ GROUP 13 - Engine
lo-13Nm7 - 9 ft.lbs.
6.
7 55-65Nmb
5 40 - 47 ft.lbs.i18Nm’
d13 ft.lbs.
MlSLA-B
0-nng
05FOOO3Removal steps
1. Battery2. Connection of accelerator cable
** 3, pg,t;eye)l * 4.
AirpipeA5. Heat protector F
6. Clutch booster vacuum hose
7. Connection of accelerator cable
(pedal side)
I)+8. Air intake hose AO+9. Air intake hose Cl * I)* 10. Oxygen sensor
11. Heat protector D12. EGR pipe
9Nmv 10 //--!
-7 ft.lbs.45 Nm33 ft.lbs.LIZ-15NmOSFOO419- 11 ft.lbs.
13.Eye boltl * 14. Oil pipe15.EGR valve16. Water pipe A
17. Water pipe B
18.Exhaust fitting
19. Heat protector E
20.Gasket21,. Turbocharger & return pipe assembly
22. Oil return pipe
l * 23. Turbocharger assembly24.Gasket25.Ring26. Exhaust fitting stayTSB Revision

INTAKE AND EXHAUST - Turbocharger (Rear)
0
Comrxessorwheel \u ~i, rOlR0182
I05FOO19
SERVICE POINT OF REMOVALM15LBAF
10. REMOVAL OF OXYGEN SENSOR
Disconnect the connector of the oxygen sensor, and install
’the special tool to the oxygen sensor.
d,
INSPECTION
TURBOCHARGER ASSEMBLY CHECK
M15LCADZ
lVisually check the turbine wheel and the compressor wheel
for cracking or other damage.
l Check whether the turbine wheel and the compressor
wheel can be
easily.turned by hand.
l Check for oil leakage from the turbocharger assembly.
lCheck whether or not the waste gate valve remains open. If
any problem is found, replace the part after disassembly.
OIL PIPE AND OIL-RETURN PIPE CHECKCheck the oil pipe and oil-return pipe for clogging, bending, or
other damage.
If there is clogging, clean it.
SERVICE POINTS OF INSTALLATIONMlBLDAF
23. INSTALLATION OF TURBOCHARGER ASSEMBLYClean the alignment surfaces shown in the illustration.
CautionWhen cleaning, care must be taken so that a piece of
the gasket does not enter the oil passage hole.
14. INSTALLATION OF OIL PIPESupply clean engine oil through the oil pipe installation hole
of the turbocharger assembly.
10. INSTALLATION OF OXYGEN SENSORUse the special tool to install the oxygen sensor.
TSB Revision

15-30 INTAKE AND EXHAUST -Exhaust Pipe, Main Muffler and Catalytic Converter
EXHAUST PIPE, MAIN MUFFLER AND CATALYTIC CONVERTER
MlLRA-A
REMOVAL AND INSTALLATION
1. Main muffler and center exhaust50 Nm36
Fbs.
I\
yil / \2: h2yR ‘i”
3. Rubber hangers, ,4. Rubber nanger5. Main muffler6.Mouldings7.Hanger brackets8. Catalytic converter and center
exhaust pipe installation bolts
9.Hanger bracket10.Protector11.Rubber hangers12. Center exhaust pipe13.Gasket
---------179fl
/-r
9 ftlbs./----------------m _
I
!
14. Rubber hangers
15. Hanger bracket
16. Hanger brackets
17. Rear floor heat protector13 Nm
13 Nm
9 ftlbs.9 ft,lbs.5Nm
4 ft.lbs.
35hlm
25 ft.lbs.18. Catalytic converter and front
exhaust pipe installation bolts
19. Catalytic converter
20. Gasket
21. Oxygen sensor connection
22. Self-locking nuts9
ft.lbs.\/23.Rubberhanger24. Front exhaust pipe25.Gasket26.Hangerbracket27. Front floor heat protector
05FOO39
SERVICE POINTS OF REMOVAL
3.4. REMOVAL OF RUBBER HANGER / 5. MAIN MUFFLERSupport with a transmission jack, etc.
INSPECTIONMlSRCAM
l Check the mufflers and pipes for corrosion or damage.
l Check the rubber hangers for deterioration or damage.
l Check for gas leakage from mufflers and pipes.wision
1
L.J

INTAKE AND EXHAUST -Exhaust Pipe, Main Muffler and Catalytic Converter 15-31
- EXHAUST PIPE, MAIN MUFFLER AND CATALYTIC CONVERTER
MlSRA-S
ii REMOVAL AND INSTALLATION31
/
L
LRemoval steps
36ft.lbs.
22013 Nm9 ft.lbs.----
em
/---------6_ 5ftJbs.13 Nm
9 ft.lbs.
1. Main muffler and center
exhaust pipe installation
bolts
2. Protector
l +3. Connection of cable assemblya*4. Rubber hangersa*5. Rubber hangersl *6. Main muffler
7. Gasket8. Mouldings
9. Hanger brackets10. Catalytic converter and center
exhaust pipe installation nuts
11. Hanger bracket
12. Rubber hangers13 Nm
9
ft.lbs.
13. Center exhaust pipe14.Gasket15.Rubber hangers
16.Hanger brackets17.Hanger bracket
18. Rear floor heat
protector
19. Catalytic converter and front
exhaust pipe installation bolts
20.Catalytic converter21.Gasket22.Self-locking nuts23.Rubber hanger
24. Front exhaust pipem
-.Ibs.
25.Gaskets
26.Self-locking nuts
27. Catalytic converter (Right)28.Gasket
29.Hanger bracket
+*l 4130.Oxygen sensor connection31. Heat protector D
32. EGR pipe connection
33.Gasket34. Catalytic converter (Left)
35. Heat protector E
36. Gasket
37. Front floor heat protectorTSB Revision

15-32 INTAKE AND EXHAUST -Exhaust Pipe, Main Muffler and Catalytic Converter
SERVICE POINTS OF REMOVALMlBRBAA
4. 5. REMOVAL OF RUBBER HANGER / 6. MAIN MUFFLERSupport with a transmission jack, etc.
:iJ ~
30. REMOVAL OF OXYGEN SENSORDisconnect the connector of the oxygen sensor, and install
the special tool to the oxygen sensor.
INSPECTIONMlSRCAN
l Check the mufflers and pipes for corrosion or damage.
l Check the rubber hangers for deterioration or damage.
l Check for gas leakage from mufflers and pipes.
lCheck if the main muffler active exhaust system valve can\\be moved smoothly by hand.
SERVICE POINTS OF-INSTALLATIONMllRDAl
30. INSTALLATION OF OXYGEN SENSORUse the special tool to install the oxygen sensor.
3. INSTALLATION OF CABLE ASSEMBLY
Install with the paint mark facing up and adjust the adjusting
nut to obtain the illustrated dimension.
TSB Revision

17-1
EMISSIONCONTROL
.~
CATALYTIC CONVERTER............................:...Inspection
............................................................Removal and Installation
................................
CONTENTSM17.U. -
CRANKCASE EMISSION CONTROL
SYSTEM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ComponentsLocation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Crankcase Ventilation System Inspection
._..Positive Crankcase Ventilation Valve
. . . . . . . . . . . .
EVAPORATIVE EMISSION CONTROL
SYSTEM................................................................Air Conditioner Switch
....................................Air Flow Sensor, Engine Coolant
Temperature Sensor and Intake Air
Temperature Sensor
........................................Canister
............................................................Components Location
....................................
FuelFiller CapInspection................................OverfillLimiter (Two-way Valve)
....................Purge Control Solenoid Valve
........................Purge Control System Inspection
....................................................Purge Control System Inspection

............................................................Purge Control Valve
........................
PurgePort VacuumCheck................................14
14
14
6
10
10
10
6
10
10
9
7
8
9
9EXHAUST GAS RECIRCULATION
(EGR)
SYSTEM. . . . . ..____._.._........__........_____.........................Air-FuelRatio Control (MPI) System. . . . . . . .
Components Location
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .EGR Control Solenoid Valve
- Non Turbo, Turbo>. . . . . . . . . . . . . . . . . . . .EGR System Inspection
- Non Turbo, Turbo>. . . . . . . . . . . . . . . . . . . .EGR Temperature Sensor
. . . . . . . .EGR Valve - Non Turbo, Turbo>
EGR Valve Control Vacuum Check
- Non Turbo, Turbo>. . . . . . . . . . . . . . . . . . . .
SPECIFICATIONS................................................General Specifications
....................................Service Specifications
....................................
TROUBLESHOOTING. . . . . . . . . . . . . . . . . ..______...............
VACUUM HOSES................................................Inspection
............................................................Installation
........................................................VacuumHosesRouting
....................................
11
14
11
13
12
13
13
12
2
2
22

17-2EMISSION CONTROL - Specifications / Troubleshooting
SPECIFICATIONS
GENERAL SPECIFICATIONSMl’ICA- -\
Items
Crankcase emission control systemSpecifications
Closed type with positive crankcase ventilationvalve
Evaporative emission control systemCanister storage type
Canister
Charcoal type
Purge control solenoid valve
ON/OFF solenoid valve
Exhaust emission control system
Exhaust gas recirculation system
EGR valveVacuum-activated diaphragm type
EGR temperature sensor Thermistor type
EGR control solenoid valve - Non Turbo, Turbo>Duty cycle solenoid valve
Catalytic converter
Monolith type
Location
Under floor
Turbocharger outlet (front bank and rear bank,)
and under floor
SERVICE SPECIFICATIONSMl7CB-.
ItemsSpecifications
Purge control solenoid valve coil resistance
036 - 44 [at 20°C (68”F)I\
EGR temperature sensor resistancekfl60 - 83 [at 50°C (I 22”F)]
11 - 14 [at 100°C (212”F)l
EGR control solenoid valve coil resistance1236 - 44 [at 20°C (68”F)lI
TROUBLESHOOTING
Symptom
Engine will not start
or hard to start
Rough idle or engine
stalls
Probable cause
Vacuum hose disconnected or damaged
The EGR valve is not closed
Malfunction of the purge control solenoid valve
The EGR valve is not closed
Vacuum hose disconnected or damaged
Malfunction of the positive crankcase ventilationvalveRemedy
Repair or replace
Repair or replace
Repair or replace
Repair or replace
Repair or replace
Replace
Malfunction of the purge control systemCheck the system; if there is a
problem, check its component parts
Engine hesitates or3oor acceleration
Zxcessive oil:onsumptron
Malfunction of the exhaust gas recirculation
system
Positive crankcase ventilation line cloggedCheck the system; if there is a
problem, check its component parts
Check positive crankcase
ventila-tion system
Ioor fuel mileageMalfunction of the exhaust gas recirculation
systemTSB RevisionCheck the system; if there is a
problem, check its component parts
d